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Last modified by Xiaoling on 2025/04/23 15:57
From version 41.15
edited by Xiaoling
on 2022/06/06 10:59
Change comment: There is no comment for this version
To version 41.28
edited by Xiaoling
on 2022/06/06 11:12
Change comment: There is no comment for this version

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... ... @@ -510,6 +510,10 @@
510 510  )))
511 511  
512 512  (((
513 +
514 +)))
515 +
516 +(((
513 513  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
514 514  )))
515 515  
... ... @@ -882,13 +882,21 @@
882 882  
883 883  == 3.5 Configure RS485-BL via AT or Downlink ==
884 884  
889 +(((
885 885  User can configure RS485-BL via AT Commands or LoRaWAN Downlink Commands
891 +)))
886 886  
893 +(((
887 887  There are two kinds of Commands:
895 +)))
888 888  
889 -* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
897 +* (((
898 +(% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
899 +)))
890 890  
891 -* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-BL.  User can see these commands below:
901 +* (((
902 +(% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-BL.  User can see these commands below:
903 +)))
892 892  
893 893  
894 894  
... ... @@ -964,7 +964,9 @@
964 964  
965 965  (% style="color:#037691" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
966 966  
979 +(((
967 967  A8 is type code and 01 means add CRC-16/MODBUS at the end, the 3^^rd^^ byte is 06, means the next 6 bytes are the command to be sent to the RS485 network, the final byte 00 means this command don’t need to acquire output.
981 +)))
968 968  
969 969  
970 970  **Example 2:**
... ... @@ -1258,7 +1258,7 @@
1258 1258  
1259 1259  == 3.6 Buttons ==
1260 1260  
1261 -(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
1275 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:233px" %)
1262 1262  |=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
1263 1263  |(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
1264 1264  
... ... @@ -1266,38 +1266,75 @@
1266 1266  
1267 1267  == 3.7 +3V3 Output ==
1268 1268  
1283 +(((
1269 1269  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1285 +)))
1270 1270  
1287 +(((
1271 1271  The +3V3 output will be valid for every sampling. RS485-BL will enable +3V3 output before all sampling and disable the +3V3 after all sampling. 
1289 +)))
1272 1272  
1291 +(((
1273 1273  The +3V3 output time can be controlled by AT Command.
1293 +)))
1274 1274  
1295 +(((
1296 +
1297 +)))
1275 1275  
1299 +(((
1276 1276  (% style="color:#037691" %)**AT+3V3T=1000**
1301 +)))
1277 1277  
1303 +(((
1304 +
1305 +)))
1278 1278  
1307 +(((
1279 1279  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1309 +)))
1280 1280  
1311 +(((
1281 1281  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1313 +)))
1282 1282  
1283 1283  
1284 1284  == 3.8 +5V Output ==
1285 1285  
1318 +(((
1286 1286  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1320 +)))
1287 1287  
1322 +(((
1288 1288  The +5V output will be valid for every sampling. RS485-BL will enable +5V output before all sampling and disable the +5v after all sampling. 
1324 +)))
1289 1289  
1326 +(((
1290 1290  The 5V output time can be controlled by AT Command.
1328 +)))
1291 1291  
1330 +(((
1331 +
1332 +)))
1292 1292  
1334 +(((
1293 1293  (% style="color:#037691" %)**AT+5VT=1000**
1336 +)))
1294 1294  
1338 +(((
1339 +
1340 +)))
1295 1295  
1342 +(((
1296 1296  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1344 +)))
1297 1297  
1346 +(((
1298 1298  By default, the AT+5VT=0. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor.
1348 +)))
1299 1299  
1300 1300  
1351 +
1301 1301  == 3.9 LEDs ==
1302 1302  
1303 1303  (% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
... ... @@ -1304,6 +1304,8 @@
1304 1304  |=**LEDs**|=(% style="width: 274px;" %)**Feature**
1305 1305  |**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
1306 1306  
1358 +
1359 +
1307 1307  == 3.10 Switch Jumper ==
1308 1308  
1309 1309  (% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
... ... @@ -1319,9 +1319,13 @@
1319 1319  3.3v position: set to compatible with 3.3v I/O.,
1320 1320  )))
1321 1321  
1375 +(((
1322 1322  **+3.3V**: is always ON
1377 +)))
1323 1323  
1379 +(((
1324 1324  **+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1381 +)))
1325 1325  
1326 1326  
1327 1327  = 4. Case Study =
... ... @@ -1333,17 +1333,23 @@
1333 1333  
1334 1334  == 5.1 Access AT Command ==
1335 1335  
1393 +(((
1336 1336  RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
1395 +)))
1337 1337  
1338 1338  [[image:1654135840598-282.png]]
1339 1339  
1340 1340  
1400 +(((
1341 1341  In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
1402 +)))
1342 1342  
1343 1343  [[image:1654136105500-922.png]]
1344 1344  
1345 1345  
1407 +(((
1346 1346  More detail AT Command manual can be found at [[AT Command Manual>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
1409 +)))
1347 1347  
1348 1348  
1349 1349  == 5.2 Common AT Command Sequence ==
... ... @@ -1368,7 +1368,9 @@
1368 1368  )))
1369 1369  
1370 1370  
1434 +(((
1371 1371  If device already joined network:
1436 +)))
1372 1372  
1373 1373  (% class="box infomessage" %)
1374 1374  (((
... ... @@ -1407,10 +1407,12 @@
1407 1407  
1408 1408  (% style="color:red" %)**Note:**
1409 1409  
1475 +(((
1410 1410  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1411 1411  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1412 1412  3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1413 1413  4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1480 +)))
1414 1414  
1415 1415  [[image:1654136435598-589.png]]
1416 1416